1 files changed, 142 insertions, 0 deletions
diff --git a/spec/controllers/projects/error_tracking_controller_spec.rb b/spec/controllers/projects/error_tracking_controller_spec.rb
new file mode 100644
index 00000000000..729e71b87a6
--- /dev/null
+++ b/spec/controllers/projects/error_tracking_controller_spec.rb
@@ -0,0 +1,142 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe Projects::ErrorTrackingController do
+  set(:project) { create(:project) }
+  set(:user) { create(:user) }
+
+  before do
+    sign_in(user)
+    project.add_maintainer(user)
+  end
+
+  describe 'GET #index' do
+    describe 'html' do
+      it 'renders index with 200 status code' do
+        get :index, params: project_params
+
+        expect(response).to have_gitlab_http_status(:ok)
+        expect(response).to render_template(:index)
+      end
+
+      context 'with feature flag disabled' do
+        before do
+          stub_feature_flags(error_tracking: false)
+        end
+
+        it 'returns 404' do
+          get :index, params: project_params
+
+          expect(response).to have_gitlab_http_status(:not_found)
+        end
+      end
+
+      context 'with insufficient permissions' do
+        before do
+          project.add_guest(user)
+        end
+
+        it 'returns 404' do
+          get :index, params: project_params
+
+          expect(response).to have_gitlab_http_status(:not_found)
+        end
+      end
+
+      context 'with an anonymous user' do
+        before do
+          sign_out(user)
+        end
+
+        it 'redirects to sign-in page' do
+          get :index, params: project_params
+
+          expect(response).to redirect_to(new_user_session_path)
+        end
+      end
+    end
+
+    describe 'format json' do
+      shared_examples 'no data' do
+        it 'returns no data' do
+          get :index, params: project_params(format: :json)
+
+          expect(response).to have_gitlab_http_status(:ok)
+          expect(response).to match_response_schema('error_tracking/index')
+          expect(json_response['external_url']).to be_nil
+          expect(json_response['errors']).to eq([])
+        end
+      end
+
+      let(:list_issues_service) { spy(:list_issues_service) }
+      let(:external_url) { 'http://example.com' }
+
+      before do
+        expect(ErrorTracking::ListIssuesService)
+          .to receive(:new).with(project, user)
+          .and_return(list_issues_service)
+      end
+
+      context 'service result is successful' do
+        before do
+          expect(list_issues_service).to receive(:execute)
+            .and_return(status: :success, issues: [error])
+          expect(list_issues_service).to receive(:external_url)
+            .and_return(external_url)
+        end
+
+        let(:error) { build(:error_tracking_error) }
+
+        it 'returns a list of errors' do
+          get :index, params: project_params(format: :json)
+
+          expect(response).to have_gitlab_http_status(:ok)
+          expect(response).to match_response_schema('error_tracking/index')
+          expect(json_response['external_url']).to eq(external_url)
+          expect(json_response['errors']).to eq([error].as_json)
+        end
+      end
+
+      context 'service result is erroneous' do
+        let(:error_message) { 'error message' }
+
+        context 'without http_status' do
+          before do
+            expect(list_issues_service).to receive(:execute)
+              .and_return(status: :error, message: error_message)
+          end
+
+          it 'returns 400 with message' do
+            get :index, params: project_params(format: :json)
+
+            expect(response).to have_gitlab_http_status(:bad_request)
+            expect(json_response['message']).to eq(error_message)
+          end
+        end
+
+        context 'with explicit http_status' do
+          let(:http_status) { :no_content }
+
+          before do
+            expect(list_issues_service).to receive(:execute)
+              .and_return(status: :error, message: error_message, http_status: http_status)
+          end
+
+          it 'returns http_status with message' do
+            get :index, params: project_params(format: :json)
+
+            expect(response).to have_gitlab_http_status(http_status)
+            expect(json_response['message']).to eq(error_message)
+          end
+        end
+      end
+    end
+  end
+
+  private
+
+  def project_params(opts = {})
+    opts.reverse_merge(namespace_id: project.namespace, project_id: project)
+  end
+end